Alarm.java

public class Alarm extends BroadcastReceiver {
  @Override
  public void onReceive(final Context context, Intent intent) {
    final Intent service = new Intent(context, AlarmService.class);

    HeadlessJsTaskService.acquireWakeLockNow(context);
    UiThreadUtil.runOnUiThread(new Runnable() {
      @Override
      public void run() {
        context.startService(service);
      }
    });

  }

  public void setAlarm(final Context context) {
    if (System.currentTimeMillis() - AlarmService.lastActive >= 2 * 60 * 1000) {
      AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
      Intent i = new Intent(context, Alarm.class);
      PendingIntent pi = PendingIntent.getBroadcast(context, 0, i, 0);
      am.setRepeating(AlarmManager.RTC, System.currentTimeMillis(), 1000 * 60, pi);
    }
  }
}